NMEA
The National Marine Electronics Association (NMEA) has defined communication standards for maritime electronic equipment. The TV80 system supports these standards for communication with external sensors and peripheral devices.
The most common standard is NMEA 0183. The National Marine Electronics Association describes it as follows:
For more information about the National Marine Electronics Association and the NMEA 0183 standard, refer to the organization's web site at:
•  http://www.nmea.org